Heinrich ostermann and charles lacroix



UNITED STATES PATENT OFFICE.

HEINRICH OSTERIWIANN AND CHARLES LACROIX, OF GENEVA, SIVITZERLAND, ASSIGNORS TO THE USINE GENEVOISE DE DEGROSSISSAGE DOR, OF SAME PLACE.

NON-MAGNETIC ALLOY.

SPECIFICATION forming part of Letters Patent No. 408,130, dated July 30, 1889. Application filed May 13, 1889. Serial No. 310,634. (No specimens.)

To all whom it may concern:

Be it known that we, HEINRICH OSTERMANN, chemist, and CHARLES LACROIX, director of the Usine Genevoise de Dgrossissage dOr, both of Geneva, in Switzerland, have invented a new and useful Improvement in Non-Magnetic Alloys, of which the following is a speciiication.

The invention is a new metallic alloy to be used in place of iron or steel in the manufacture of articles which must beinoxidizable and not influenced by magnetism.

The said alloy is composed of nickel, chromium, platinum, copper, lead, zinc, and tin. These metals are preferably combined in the proportions set forth below and in the following manner: An alloy is first made of nickel and chromium by meltingthe two metals together. Another alloy is made of platinum,

The metals employed are in the following proportions: One to eighty per cent. of nickel; one to thirty per cent. of chromium; 0.1 to twenty per cent. of platinum; 0.1 to fifty per cent. of copper; 0.05 to fifteen per cent. of zinc; 0.1 to 1.5 per cent. of lead; 0.05 to 0.5 per cent. of tin.

Having thus described our invention, we claim- A non-magnetic alloy composed of nickel, chromium, platinum, copper, zinc, lead, and tin, in the proportions and substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

IIEINRICII OSTERMANN. CHARLES LACRCIX.

Witnesses:

E. IMER-SCHNEIDER, LYELL T. ADAMS. 

